1.0.0 - Initial Release.
1.0.1 - Minor bug fix.
1.0.2 - Improve caching key by including postal code and country.
1.0.3 - Improve handling of special characters in product description.
1.0.4 - Further improvements to handling of special characters in product description. 
1.0.5 - Add new/missing US/International shipping methods.
1.0.6 - Make sure CP helper is re-initialized every time rates are computed.
1.0.7 - Fix XML warning relating to unterminated entitites.